Stovepipe-making machine



Aug. l 8. 1925.

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UNITED STATES PATENT oFFlcE.

Y LONZO BAXTER SMITH, 0F RICHWOOD, WEST VIRGINIA, ASSIGNOR. 0F FOUR ENTY- FLFTHS EACH TO T. L. FALOR, W. L. THOMAS, AND J. A. TINCHEB, ALL OF RICH- WOOD, WE'ST VIRGINIA.

STOVEPIPE-MAKING MACHINE.

Application filed December 11, 1922. Serial No. 806,221.

To all whom 'it may concern:

Be it known that I, LoNzo BAXTER' SMITH, a citizen of the United States, residing at Richwood. in theI county of Nicholasand State of West Virginia, havev invented certain new and useful Improvements in Stovepipe-Making Machines; and I do declarethe following to be a full, clear, and exact descriptionA of the invention, such-as will enable others skilled in the arti tof which it appertains to make and use the same. My invention relates to machines for making complete ,sections of stove pipe, with the exception that the side seam is eft-open to permit nestin' g of a plurality of sections for shipment an storage.

While the primary object of the invention is to provide anieffcctive and rapid machine for constructing pipe sections of the form shown by my United States Patent No. 1,356,022 of 'October 19, 1920,10 is to` be un.- derstood that the machine is not restricted to the'making of this particular form of pipe section. j

A further object is to provide in a single machine, means for intermittently advancing a long sheet of metal, means for cutting a blank from the sheet after each advancement thereof, means for edge bending the blank to later form the side seam of the pipe section, and means for curving the bent blank on an axis parallel to its bent edge, forming a complete split section of pipe whosev side seam can be easily,` completed later byhand.'

Other objects are to make novel provision for ejeetin'g any remnant of any sheet which is a' trifle too small for a complete pipe section, and f to further provide for ejecting anynarrow strip which may be left after shearing the last blank therefrom. Yet another object is to provide for relative adjustments of the several uni-ts of the` machine to adapt the latter for making pipe sections of different diameters.

A still further -aim isl to Provide novel means, controlled by the sheet of vmetal fed to the machine, forbring'ing the severalmetal feeding and working units into play in the proper sequence.

One metal working unit is provided with a gage'for limiting the movementof the metal and another object is to provide'for moving this gage out of the path of the metal to allow it to advance to the nextluniti` lVith the foregoing in view, the invention resides in the novel subject matter herein-A after described and claimed, the description being supplemented by the accompanying drawings.

Figures 1 and 1'l structed in accordance with my invention.

. Fig. 2 is an enlarged vertical vlongitudinal section through the shear S and thescrapejector E associated therewith. j

Fig. 3 is a verticallongi-tudinal sectional View through the retrograde feeder F for ejecting undersize remnants of metal.

Fig. 4 is a detail transverse section as indica-ted by line 4-4 of Fig. 3. y Figs. 5 and 6 are side elevations of opposite sides of the machine, parts being omitted from each view for sake of cle-arnese. Fig. 7 is a topl plan view with parts omitted.

Figs. 8 and 9 are elevations of the inlet and outlet ends ofthe machine.

Fig. 10 is a horizontal section with part-s in elevation. j

Fig. 11 is a diagrammatic longitudinal section showing more particularly the clutch of the entire `machine and the controlling means thereof, as well as portions of the operating means of the feeder F.

Fig. 12 is a diagrammatic view showing ointly show.l a longitu.: dinal -sectional view of a machine oom the shear operating means, the operating ,p

mechanism for the curver C and part of the opera-ting means for the feeder F.

Fig. 13 is a diagrarmnatic Alongitudinal section showing the operating mechanism for the movable clamping member of the i I bender B.

Fig'f14 is a diagrammaticv longitudinal section showing the operating mechanism for the upwardly swinging bending member of the bender B; l Y

Fig. 15 is a diagrammatic view illustrating parts of the operating means of the feeder F and associated parts.

Figure 16 is a plan viewof'theblank after it is sheared, punched at its edges with edge connecting means, andbent at pneedge in Z-shape.

Figure 17`is an edge elevation of the blank shownin Fig. 16.

Figure 18 is an enlarged detail sectional viewillustrating the manner in which the edges of the-blank are connected with each other after said blank is curved into cylindrical'forni, forming a complete stove pipe section. l 1 l In' the drawings above briefly--descriiiedgl I have illustrated .a ma-in frame, for sup'- porting all parts of the maehineysaid frameV being composed ofa paircfI parallel side frames 1 connected. at their .11p-per corners by end bars 21and3, while )lower portions of said frames."are held inzjspacedrelation by suitable tiereds and SpaQersas";indica.ted by the numerals ,f f1 :"'I Q Mounted uponthe mainiframdere means for intermittently.,,advancing an elongatedA sheet of metal',"ashear Spforcutting a blank from the sheet after each ,advancement thereof, a feeder E,'fa bende,r-JB .forzmaking a' seam-ferming bend'ronone-edge of; the blank, a cu'rver C -to whicl1-1thefbent.-:blank is fedl by the aforesaid v`feeder, for curving said blank into substantially pipe-form on an axis parallel with'j'ts bent edge,` a'retrograde feeder F for ejectinganyaieninant:of the` sheet WhichQ-is .of slightly? insiililicient siicto form a complete ajnlgajyfscrap ejece'tor. E whichejectsa'ny small strips'oi'z metal which may remain ,attenti eg last' shearing operation is performed.:iQ lf" The shear ,kei is adilrsltableaillfng the horizontal top'bars oftliesideirames 1, beilij,r provided with a pair ofsl'ides 6 to which are secured the ends of, the? transverse shear bed 7. A pair q fstfandards Brise from"t`he slides 6 and are"p`rovided 'with appropriate' guide-Ways for a, 'yerticallyfmovable shear member 9 which may be laterally adjusted in its guides by suitable 'set scrclwslf). Thl shear member 9 carries a. sheet cut/ting blade 11 and a pair-,of 1dies 12 andlvdisposedat' opposite sides of' said blade. The blade `11 co-actswith a stationary bladeld. carried by the bed 7, Whilethe dies 12and 13 gcolact metal is fed between the blades-1 and the shear memberf) is operated,'aablank`A with recessed die'blocks 15 andld'cj lried'4 by said bed. e if I f By this arrangement,

will be cut from the advanced endfoff'the acct and sim ul tan`eously,thel dlflaiidlf-lfheld, the` arms 38u-"levers 35 and links 130;

will stamp the Inet-al at opposite sides of the cut with edge connecting means such as those disclosed by the patent above referred i to. Y

In the preferred l'orm of construction, a horizontal transverse shaft 17 connects the upperends ofthe standards 8 and a pair of armst'18 are'pivotally mounted at their upper ends upon this shaft, the lower portions of said arms being 'disposed in advance of the shear mechanism S, these arms being 23 and 24, the former being idle, while theY sprocket 24 has a clutch connection 25 with a transverse shaft 26 which -forms an ele-- "f ment of the curverC, this shaft 126 being.

driven by a chain 27 from a shaft-'yet to be described. vThe upper reach of chain 22 is held in mesh with the sprocket 21 by an idler 28 carried bypne oithe slides 6. It

will44 thus be seen that as long as lthe chain 22 is driven, the upper feed .roll- 19 willV be rotated in a direction ,to feed,the-sheetof@74V metal tothe machlne. However, at certain l' times, the lower presser roll 20 is spaced downwardly toV such -an extent thattdoes not'hold the Asheet against the upper feed rollf`19 and hence no feeding of the' sheet will-*then take place. In the preferred forni of construction, the ends of thepresscr roll 20I are reduced and passed through Slots 29de? .01.

of he pressen roll being rotatably supiin tf e lower; ends of the arms 18, said ends ported by a' pair of horizontal levers30 "l which, are slionfnqwnuist clearly inlg`ig.,2. -`At levers'35 are fulcrumedfat l3 6 -to said bracki. f

mpstanding arms 381cm a transverse control nfsh-afft 39. c o-'zi'ct with the ends of the :levers '35 'iis will beclear'by .referenceto Fig. 2,l

thisishilft 39 fbeing provided with a suitable the machinefwhenthe lingers 40 are so fnunber 'offcoii'trol fingers 40 which are nors mally held in the position shown in the draw-v ings (Fig. 2)' by the sheet of material in 1' ser that, ,in View of the fue( lhut the lwirfa Sil) are fnlernnicel nfion the nosrrl ll oi the :unis 32 which more with the shear nieinhnr l l.\ mi i y ndvenred through. the nineinrw.

y upwardly under the :niion f spring or .sirinnjs n (Fig, Y(y ,fr the shaft 39 lo disengny n the levers f1.5 f the ting-3 the "1) giltiy when th" .51 i ed, the levi rr s 30 dropifirf': the messer Y 2Q to disen i er the remaining scrap :ed roll i9. This sli nn'l'ter desrrihed in d i' wr'ii" #l2 drsikgnzite rigid sheet- ;fried hi' i transverse har nds to the brackets is nl so to permit tl.; owurdiy under the influente The fingers i2 preferably that "lnri i4 spared a slight :wie lingers 453 ou :1; i kien-L hisirfeon tho lownr enf Ish anni siirinn "i z .t srrx to proierijv' ;nio sheet over the hlsnl/. llt

g nmnnlied i are seriniild lo beam rigs i Wit-h :i depen pivote" zu' operating which nii .ilui'nlhj-f` Cowling: to the position on thel frninc, to which the slides 6 have heen adjusted. 'llw bar ffl is niviitrd to '-shnped lever ERG nlerinned un :i transverse shaft, 57 :it one Gnd n the 11min traine. as shown, more particl'ilurljv' in Figs. yl and .Z, Une :win oi the lever in is prnirii d ii'iih :L roller (fo-:i

.fi'zunp ihn r-"i rena" f`oi wurd edge of the sheet when il 2- i Y iniiinllj; inserted into the 1u hine. 'Vile leiding 1u mns may then also l'noyerwlml hr hond, for which purpose I hsv, Lhor-.r lw liwoll wheel WZA A41, the i'olroifi'ziile terilrr F is; mounted fo he bodily :nl insn-ll with the shear S, as woll as kfor util-stimmt towaili'l and from the iiw unimi in; menus ol' this retrograde "f nm): non' he desrrihed. A pair 0f yonll inns 425'; :ire iizgfifrllbv secured at One and le le; he: T ol' the shear :1nd extend tl* ,re/from or: ,in end har :ind these bars 53 sui'iiinrt, n plurality of posts 64 upon W 2. gif-ir ol' Lil-irzillel longitinlinzil tracks 'dhA niorntawl. A pair of Carriers A @unna-rind hy transverse hars 67, curry the retrogrnde feeder 1*" und are adjnstnlile along' the tracks C5, appropriate clamping screws (3S being employed for securing sind carriers in adjusted positions. The hairs h3 :nie rioidl",Y Connected :it their mills h5' fi trui versn har 69 to which a indinnl udine-ling sr-,rew is swiveled, mi sereni lining threaded through a nut 77 (n 'Vieil hi' ihn end liar lty will be seen f urinnn' fr' the screw 7() will longitudithe entire shez'ir l'neehanism S, rogrinle 'trahir if, und :L supplemental traine whivh rfirries this feeder including' ihn trim tif und lhal hars (i3. Then, fnrnt nl the carriers 66 may he uw iriu'lis 35 if necessary. To ,"l sind :issorii ted parts in the rh they hauh been adjusted, ot' longitudinal threaded rigidly held by the main roller lil prf/vided with n ther fidi: si

. hings receiving the .t e t f hed muy slide along the roll, when the Emir is :idjnsted along its ,wie 'fla lori; nuts 73 on the rods 72, :arc thrnsnlw, wrainst opposite sides 0f the A latter is' @Purely locked.

lel'nre pz: ing on t-o some other part of ihn ninehne. it nerr he`1'iointed out that the v 'n j hars o? between the carriers 66 jr :i msi oprime ,guide fingers for the sheet o? nie@ il. aff ndimitnd hy the numerals 74, and To., the hitter haring' inclined portions or o, pnrpow to zap-peor. These lingers 76 aline. with longitudinal sheet, supports 77 which are in turn aline-d with the fingers 40 when the hitter are depressed t0 the position shnwn in the :huw i suitable means :ih'll is ziirlz" i if'fil by She ill- The bed 7 0f the driven to operate the .www1 i'w-fl tls of the ninehine. but, (mit .ai n piedi fl finnl is the housing); :1H opt'ifxtivellv www I'l with the. ruin shut't l'v'l to mint@ thv lnilrz; 'This housing is provided iih internnl teeth 9:. vo-opvrnhlv with :l pziir nl' spring' pressed dogs 91 (m n dish f1.3 nhilh is sm'nzwl to the shtll't till tor ro'rztiifm llir with. mntrwl lever ll is'l'nfw lip it iv |-1 provided with vous .di Wir/2l t -fi pulire the dogs .1 und imi-i iinni w1 of' 'i- Ingenieur\\'ithth.l-1-thif!A mili-ol imm' /"t beingr thor heid in llnl pn lion disrhwed in ["ig. 11. For so holding' tinx loyer 9h, l provide :l nn'ivuhln abutment Whirh is prel'trubly 'in thvy lornx nl" :t len-i- 118 loose upon :l tr-flnsvtrse shni't ll. smid lever preferubl)Y huvinpY n ),'iehlnbhshoe :01) to enfaire the lover flt'. This lover .(l is norlnzlllv held in the position disvlosvd in hij. 11 by nn upstnnding dog lill whose lower end is scoured upon :l .slt-,ew 102 nhivh is tree to turn upon u trunsvorse shut't 103. Sit-e Figs. lL und l1. Slerve 1112 is proviitd with :in arm 104 co-opurnblo with :i suit-:1blu spring` 105 to yieldnhly retain the dog; 101 in operai tive position. The sleeve 102 is also provided with n, pnir of upstunding control n n l hifvrlhsn upper ends curr Y transverse he s 10T und 10S which are disposed one ebow thix other. A pair of master control 1in rs lll nre secured to und rise from the rn( hott 10T. the upper ends of these tingvrs being in the path of the blank out from the shew; h); the shrank Lntclms 110 Secured on the lower rock shaft 108 normally enths lower ends o1 the fingers 109 so .zw held frsrninst. swinging upon 'lhv the blank advanced w uw hihi; will et P the upper lingers 10i) :ind will consequently se the dog 101.

n i w :e whim in turn re- "s y: filtri if) Voip tliz of the clutch, i r tive dogs fl-L to establish nf @ion between the clutch 12H1 "tif fxi 11211.11 60.

.hnn; for releasing the hitihis l 1H u hen l "intr-h has been thrown into pln'i'. permitting said fingers bo move out nl' thtA path nl the advancing blank. llon'mer, this' releasing means can be more elem-ly undertsood it described later.

For restoring tlielever 98 to operative position mnt permitting the Clog 101 'to ugzi'in eng-ugo said 'lim r nider the influence nl tln` spring '105, Yi pass one 0nd of aresetting rod 111 locr'nlv through en ear on said lever und provide seid rod with a, nut or other shoulder 112 to ,strike and resetthe lover when seid rod pulled. For so pullinf;l the rod, attention now being directed more particularly to Figs. 1 and 11, a bell ri'nnlc 113 is loosely fnlcrnmed upon the finiti, 57 und is ronnmted at one end With '.-Jid rnd While its other end is provided With Ar 111 vhivh roasts with a cam 115 In hn'tliu, AL the proper time, the A'um roili's ther hell rrunk 113 and pulls upon the rnd 111 to rostme tho lever 98 t,0 its opn-:niw position with its oushion 100 in the path ot the. projecting end of the control hwvi- 0V. Them the rod 111 is moved so tlm the shoulder 112 is disengaged from lw hier 9S, leaving the latter free to relcnse when the dog 101 is next tripped.

'l`hv releasing menus for the latches 110 is directly associati-d with the bender B and non' describing this bender, n, more thorongh understanding of Certain parts above referred to, may be gained. This bender includes :1` suitablebed ,plate 116 which may woll be seein-ed upon a, transverse bar 117 which supports one end of the rods 72..

wer the bed plate 116, zi` sheet-elalnpin` und die-Cnrnving un1nher-118 is mounted 'this nwmhvr beingprovided with an acute turn the edge ot' the sheet around the die 119 and against the die 120' to form a Z- ,ers 126 engaging cams 12'( on the ends of the cam shaft 60j It may here be explained that the bars 124 are provided with cams 128 for horizontally moving a pair of slides 129 in one directlon, when said bars move downwardly to swing the bending member. 121 upwardly to operative position; vThe function of these shdes will be described more fully below.

The numeral 130 designates a gage bar slightly-beyond the upper ends of the master control fingers 109, serving to limit the movement of the sheet of metal when said fingers have been operated to bring the clutch into play, in the manner above set forth, thereby also causing the bending member 121 to swing upwardly. This gage bar is carried by arms 131 which extend from a rock shaft 132 extending across the machine between the bender `B and the ourver C. Upward movement of the bending member 1241, causes Vnoses 133 with which it is provided, to

swing the arms 131 and the gage bar 130 upwardly out of the path of the metal sheet or blank and it is then that the slides 129 come into play to hold the gage bar in its raised position. The shaft 132 which carries the gage bar in question', is provided with crank arms 134 from which upright pins or rods 135 depend, the lower ends of said rods bein normally received in notches 136 in the sliles 129 as shown in Fig. 14. When the gage bar 130 is raised by the fingers 133 however, the rods 135 leave the notches 136 and by the time the bending member 121 and its noses 133 again move downwardly, the slides 129 have been shifted by the cams 12S so vthat the rods 135 then rest upon the slides 129, at the points identified in the drawings at 137, thereby holding the gager bar 130 raised out of ythe path of Athe advancing sheet.

It is the upward movement of the gage bar 130 that releases thev latches 110, thereby permittinnf them also to move out of the path of the sheet metal. In attaining this result, I provide the rock Shaft 132 with a pair of additional crank arms 138 from which a pair of links 139 depend, the loner ends of these links carrying a transverse rod 140 having` connection with the latches 110 (see Figs. l and 11). By this association pt' parts, it will be seen that when the gage bar 130 is raised out ot' the path of the sheet metal, the links 139, rods 140 and associated parts which connect the gage bar with the latches 110, will release the latter, thereby permitting` the lingers 109 to move out of the path of the advancingl sheet metal. Preferably, thc fingers 109 are not only permitted to move out of the path of the metal, but are forced to move in this manner by the pin and slot connections 141 which are provided between the lower ends of the fingers 109 and crank arms 142 which are moved by operation ofthe latches 110.

Due to the arrangement above described, it will be seen that the slides 129 jointly hold the gage bar 130 andl the lingers 109 out of t the ath of the advancing sheet metal. It is then that the feeder F comes into play to ad- Vance the blank which has been cut from the sheet by the shear S and bent by the bender B, to engage this blank with the curver C. To accomplish this result, the feeder is ot novel construction. The numeral 143 designates a bed plate over which the metal blank is guided by suitable supports, said bed plate being secured to a pair of carriers 144 which are by preference of the form shown most clearly in Figs. 1n and 15. These carriers slide upon a pair of horizontal rods 145 which may be well supported at one end by hangers 146 from the threaded rods 72. Above the bed plate 143, the carriers 144 support a feed roll 147 having a sprocket 148 held in mesh with the upper readh of the chain 22 by a suitable idler 149. A presser roll 150 for the reception of which the plate 143 is suitable recessed, is carried by arms 151 which extend from a rock shaft 152 mounted at its ends upon the carriers 144. This rock shaft is provided with an actuating arm 153 co-operable with a bell crank v154 controlled by a nose 155 (Fig. 11? on a cam 15G on shaft 60, said hell cranr heilig loosely mounted on a transverse shalt 157 located above shaft 99. Prior to operation of the cam shaft 60 by the ciu/ci., the rollers 147 and 150 have co-acted in feeding the sheet forwardly. As soon fas the cam shaft is operated however, the nose 155 releases lever 154 and thus the presser roll 150 disengages the sheet from the roller 147 so that the latter is thrown out ot' play. While this is taking place, the sheet fis being sheared by the shear S and bent by the bender B, and when the gage 130 and the ngers 109 aire held out of the path of the bent and sheared blank, the feeder F comes into playin advance said blank to the curver (l, for which purpose l provide the carriers, 

